I photographed these petunias right after a spring rain had stopped,under overcast skies.Hand-held,with me simply squatting down and trying to hold the camera steady.This lens is a late-model Ai 50f/2,and is the fourth of the 50 f/2's I have owned. This and the last pre-Ai rubber focusing ringed models have both been just super for me. I like the way this lens performs at f/4 and f/5.6 quite a bit.